Research Article
Mechanical Properties of Epoxy and Its Carbon Fiber Composites Modified by Nanoparticles
Table 1
Compressive properties of bulk matrix resins cured by piperidine.
| Filler type | Weight fraction | Compressive yield strength (MPa) | Compressive modulus (GPa) | Tensile strength (MPa) [25] | Tensile modulus (GPa) [25] |
| Neat epoxy | 89.1 ± 1.2 | 2.62 ± 0.05 | 65.8 ± 1.9 | 2.94 ± 0.10 |
| Silica | 2 wt.% | 91.6 ± 0.4 | 2.63 ± 0.02 | — | — | 4 wt.% | 91.5 ± 0.2 | 2.55 ± 0.03 | — | — | 6 wt.% | 91.9 ± 0.5 | 2.46 ± 0.05 | — | — | 8 wt.% | 92.3 ± 0.3 | 2.58 ± 0.03 | — | — | 10 wt.% | 91.1 ± 0.2 | 2.71 ± 0.02 | 69.0 ± 0.5 | 3.36 ± 0.12 | 20 wt.% | 94.8 ± 0.5 | 2.89 ± 0.07 | — | — |
| Halloysite | 2 wt.% | 90.8 ± 0.2 | 2.43 ± 0.05 | — | — | 5 wt.% | 89.3 ± 0.3 | 2.40 ± 0.01 | 68.1 ± 0.3 | 3.03 ± 0.13 | 7 wt.% | 90.9 ± 0.2 | 2.55 ± 0.03 | — | — | 10 wt.% | 90.4 ± 0.1 | 2.49 ± 0.01 | 68.2 ± 0.4 | 3.11 ± 0.08 | 15 wt.% | 91.3 ± 0.2 | 2.58 ± 0.02 | — | — |
| CTBN liquid rubber | 5 wt.% | 92.4 ± 0.6 | 2.61 ± 0.03 | 67.3 ± 0.7 | 2.09 ± 0.10 | 10 wt.% | 89.3 ± 0.5 | 2.42 ± 0.06 | 60.1 ± 1.0 | 2.61 ± 0.10 |
| Hybrid system | 10 wt.% halloysite + 5 wt.% CTBN | 93.0 ± 0.3 | 2.72 ± 0.03 | 65.9 ± 0.3 | 3.05 ± 0.11 | 10 wt.% silica + 5 wt.% CTBN | 96.2 ± 0.9 | 2.77 ± 0.05 | 65.5 ± 0.4 | 3.17 ± 0.10 | 10 wt.% silica + 10 wt.% CTBN | 90.1 ± 0.3 | 2.69 ± 0.04 | 59.2 ± 0.7 | 2.83 ± 0.09 |
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